ground[Anglais]

nom
1 : the part of a scene (or picture) that lies behind objects in the foreground; "he posed her against a background of rolling hills"
2 : the loose soft material that makes up a large part of the land surface
3 : a rational motive for a belief or action
4 : the solid part of the earth's surface
5 : a relation that provides the foundation for something
verbe
1 : hit or reach the ground
2 : fix firmly and stably